Clock



FIG. 1 is an upper front left perspective view of a clock.

FIG. 2 is a front perspective view of the clock shown in FIG. 1.

FIG. 3 is a rear perspective view of the clock shown in FIG. 1.

FIG. 4 is a right side view of the clock shown in FIG. 1.

FIG. 5 is a left side view of the clock shown in FIG. 1.

FIG. 6 is a top view of the clock shown in FIG. 1; and,

FIG. 7 is a bottom view of the clock shown in FIG. 1.

The broken lines in the drawings depict portions of the clock that form no part of the claimed design. 

CLAIM The ornamental design for a clock, as shown and described. 